My personal favorite Floyd album is "Animals", where Gilmour's solo on "Pigs" starts with one note held, bent, vibratoed, and bent some more for about 8-10 bars while the chord progression changes around it. Animals is my favorite too, but my favorite moment is on "Dogs", on the solo just after Waters' vocals.
Another great solo, indeed. I've said for years, with a good amount of confidence, that Dave Gilmour is the most underrated guitarist in rock and roll today. I stand by that opinion.
Scouts Out! Cavalry Ho!